CVE-2026-124700

EUVD-2026-124563
In Telerik UI for WinForms, versions prior to 2026.4.1111, an untrusted URL redirection vulnerability exists that allows an attacker to launch arbitrary operating system protocol handlers with attacker-controlled arguments via crafted documents and hyperlinks with a non-allowlisted URI scheme that the user opens.
Open Redirect
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
ProgressSoftwareCNA
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
progresstelerik_ui_for_winforms
2026.3.1007 ≤
𝑥
< 2026.4.1111
CNA
Common Weakness Enumeration
References
https://www.telerik.com/products/winforms/documentation/knowledge-base/kb-security-untrusted-url-redirection-cve-2026-124700